36604021 has 4 divisors (see below), whose sum is σ = 37496844. Its totient is φ = 35711200.

The previous prime is 36603991. The next prime is 36604027. The reversal of 36604021 is 12040663.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12040663 = 181 ⋅66523.

It can be written as a sum of positive squares in 2 ways, for example, as 1664100 + 34939921 = 1290^2 + 5911^2 .

It is a cyclic number.

It is not a de Polignac number, because 36604021 - 2¹⁵ = 36571253 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 36603983 and 36604001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36604027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446350 + ... + 446431.

It is an arithmetic number, because the mean of its divisors is an integer number (9374211).

Almost surely, 2^36604021 is an apocalyptic number.

It is an amenable number.

36604021 is a deficient number, since it is larger than the sum of its proper divisors (892823).

36604021 is an equidigital number, since it uses as much as digits as its factorization.

36604021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 892822.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 36604021 is about 6050.1257011735. The cubic root of 36604021 is about 332.0291895031.

Adding to 36604021 its reverse (12040663), we get a palindrome (48644684).

The spelling of 36604021 in words is "thirty-six million, six hundred four thousand, twenty-one".